Sledding Salt Lake City

Salt Lake City – where are some fun places for a family with 7 and 10 years old?
He'll be there next week. I have found places for skiing, sledding and tubing. How Things interior?
That their children can enjoy going to Clark Planetarium. They IMAX theater is really great. My kids love going there. Check out their website: http://www.hansenplanetarium.org/
Sledding and Tubing Salt Lake City January 2009